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Add pointers to SHA1 and SHA256 implementation functions

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These pointers will be required in next commits
where subroutines with new instructions are introduced.
Depending on CPUID dynamic check, pointers will refer to old
SW-only implementations or to new instructions subroutines
This commit is contained in:
Pavel I. Kryukov
2018-02-11 13:40:24 +03:00
committed by Simon Tatham
parent 5a38b293bd
commit 59e2334029
3 changed files with 23 additions and 6 deletions
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12
sshsha.c
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@ -13,6 +13,8 @@
#define rol(x,y) ( ((x) << (y)) | (((uint32)x) >> (32-y)) )
static void sha1_sw(SHA_State * s, const unsigned char *q, int len);
static void SHA_Core_Init(uint32 h[5])
{
h[0] = 0x67452301;
@ -124,20 +126,26 @@ void SHA_Init(SHA_State * s)
SHA_Core_Init(s->h);
s->blkused = 0;
s->lenhi = s->lenlo = 0;
s->sha1 = &sha1_sw;
}
void SHA_Bytes(SHA_State * s, const void *p, int len)
{
const unsigned char *q = (const unsigned char *) p;
uint32 wordblock[16];
uint32 lenw = len;
int i;
/*
* Update the length field.
*/
s->lenlo += lenw;
s->lenhi += (s->lenlo < lenw);
(*(s->sha1))(s, q, len);
}
static void sha1_sw(SHA_State * s, const unsigned char *q, int len)
{
uint32 wordblock[16];
int i;
if (s->blkused && s->blkused + len < 64) {
/*